Name: Riparian Vegetation Planting Opportunities (25m)
Display Field: VALUE
Type: Raster Layer
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Description: Aim of this layer:This layer combines the “riparian vegetation quality” layer, with the “energy (will the river do the work?)” layer with the aim of identifying, at a catchment scale, areas where riverbanks could be protected from erosion by improved riparian vegetation ideally including riparian woodland. Thus, the new layer identifies areas where:- tree planting will benefit geomorphology through river restoration when morphological pressures were present in a particular section. Note: existing morphological pressures have not been included in this layer apart from riparian vegetation loss. Further work is currently being undertaken by SEPA to consider other existing morphological pressures. The mapped outputs of this work will be made available in due course and could inform more detailed project stages. - and sections where lack of trees are exacerbating geomorphological process like bank erosion etc. This layer classifies the cells into high, medium, low priority for riparian woodland planting. This layer is for:- Riverwood. Woodland extension tool- Local Development Planning – This layer could be used as a source of evidence at a strategic scale to identify where riparian vegetation, and particularly woodland could be beneficial to the water environment within a catchment. It is noted that site specific assessments would be required to inform individual projects. Method:The layer makes use of the sections where the vegetation condition is poor or moderate for each bank (good condition and other habitats are excluded from the analysis) and sections where the recovery potential of the channel is high. E.g., if there were morphological pressures in that river reach, that section of river has the energy to self-recover of recover with assisted restoration, and riparian planting plays a role on that mitigation. The scoring table is shown below, table adds the priority score for both elements:Tablerows: Vegetation quality (score/priority) Columns: Energy for self-recovery (score/priority) Low (3) Moderate (2) High (1) RTC (1) Poor (1) 4 3 2 2 Moderate (2) 5 4 3 3- High priority for riparian woodland planting (green): final score 2. Raster value 1- Medium priority for riparian woodland planting (blue): final score 3 and 4. Raster value 2- Low priority for riparian woodland planting (amber): final score 5. Raster value 3Caveats:- The layer is useful at local development planning scale to identifying wider areas where tree planting could benefit the water environment. This is not intended to be used at project scale where further assessments would be required. - Some areas may show not up-to-date information for the existing condition of the riparian vegetation. - This layer only considers baseline water bodies (those with catchment greater than 10km2).Raster format 25m
Service Item Id: d4639908e4e84b3e8c25e6ad4a0cc652
Copyright Text: Riparian vegetation data collated from field surveys undertaken by SEPA Geomorphology Staff and contractors for less than good water bodies, rest based on GIS analysis. Energy data based on will the river do the work. Then both layers have been combined to produce this layer following the method detailed in the description.
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